Storage-battery system.



J. T. LISTER.

STORAGE B ATTERY SYSTEM. APPLICATION FILED JULYZY. 1910.

1,175,585. r Patented Mar.14,1916.

I4 I llllyllllmillk /Liillllmllll P "/5 l6 l7 16' Witn eds e 0' I mwal UNITED STATES PATENT QFFTCE.

JOHN 1 LISTER, OF CLEVELAND, OHIO, ASSIGNOB TO THE TURBINE MOTOR ELECTRIC 7 CAR COMPANY, A CORPORATION OF OHIO.

STORAGE-BATTERY SYSTEM.

To all whom it may concern:

Be it known that I, JOHN T. LISTER, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Storage-Battery Systems, of which the following is a full, clear, and exact description.

This invention relates to storage battery systems and particularly to systems employed in electric or battery driven vehicles.

The principal object of the lnvention s to increase the field of use of such systems and especially to provide means whereby the extent of active use or operation of a system is not dependent on the amount of .potential energy contained in a single set of batteries, and further to overcome the disadvantages of and delay incident to the recharging of batteries or the replacing of discharged with charged batteries.

My invention contemplates the use of two sets of storage batteries, either of which may be connected to the motor or translating device, a source of current prefer ably a small engine driven generator which may be'connected to one battery so as to charge the .same while the other battery is.

connected to the translating device.

-In the preferred embodiment of my invention the connecting of oneset of batteries to the translating device and the disconnecting of the other settherefrom, and the connecting of the generator to the dis charged or partially discharged set of batteries is done simultaneously and automatically by switch devices which are thrown into operation or actuated by the condition of one of the batteries or the extent to which it has been charged or discharged.

My invention may be further briefly sum marized as consisting in certain novel combinations and arrangements of arts which will bedescribed in the speci cation and set forth in the appended claim. I

For an understanding of my invention reference may be had to the accompanying drawing which shows diagrammat cally a Specification of Letters Patent.

Patented Mar. 14, 1916.

Application filed July 27, 1910. Serial No. 574,057.

system embodying one form of my invntion.

former having positive and negative terminal conductors 15 and 16, and the latterhaving positive and negative terminal conductors 17 and 18. For connecting one set of batteries to the mbtor and at the same time disconnectingthe other set therefrom, I employ in this case a double throw electromagnetic switch designated as a whole by the reference character 19, this switch being provided with two bridging contacts 20 and 21, and two sets of stationary contacts 22, 23, and 24:, 25. The contacts 22' and 23 are connected respectively by conductors 26 and 27 to the negative side of battery set 13 and to the negative terminal 12 of motor 10, while the set of contacts 24; and 25 are connected respectively by conductors 28 and 29 to the positive side of battery set 14 and to the positive terminal 11 of the motor. The switch 19 also includes a core or plunger 30 to which the bridging contacts 20 and 21 are mechanically connected, and two solenoid coils 31 and '32, the former of which when energized is adapted to draw the core and bridging contacts to the-left, as viewed in the drawings, so as to cause the contact20 tt' engage and bridge the confrom the-motor and to connect the battery set l-to the motor by the engagement'of the bridging'contact 21 with the stationary contacts 24 and 25. I have PIOVidGdiIi'jthiS case means whereby the electrical condition of one set of batteries throws the switch from one position to. the-other and in this case this is iaccomplishedby means: of two electro-magnetic relay switches 33 and 34, the former including a coil 35 bridged across the terminal conductors of battery set 13, a vertically movable plunger 36 provided with a. bridging contact 37 and two stationary contacts 38 and 39 located in circuit with or in one of the conductors connecting the solenoid coil 31 across the terminal conductors 15 and 16 of battery set 13. The relay switch 34 includes a solenoid coil 40 which is connected across the terminais 17 and 18 of battery set 14, a vertic-ally movable plunger 41 having at its lower end a bridging contact 42 and two stationary contacts 43 and 44 which are adapted to be bridged by the contact 42 and are located in circuit with or in one of the conductors connecting the solenoid coil 32 across the terminal conductors 17 and18 of battery set 14. The resistance of the coils or of the circuits of the coils of the relay switches 33 and,34 may be quite "highso that very little current need pass i and 47 to either set of batteries, I employ a double throw switch 49 which operates in conjunction with the switch 19 and 1n this instance is mechanically interlocked with the switch 19 and is operated thereby. This switch which as here shown is ofthe rotary type includes two movable contact members or blades 50 and '51 electrically disconnected from one aiiother, and four stationary contacts 52 and 53 connected to the terminal conductors 15 and 16 of battery set 13,. and 54 and 55 connected to the terminal conductors 17 and 18 of battery set 14. The terminal conductors 46 and 47 of the generator 45 are electrically connected respectively to the two movable switch blades 50 and 51. The switch 49 is operated by the switch 19, in this case by means of a pivoted lever 56, one 'end of which is connected with the core plunger 30 of switch 19 and the other end of which is loosely connected to the switch 49, the lever 56 being pivoted between its ends'withthe result that when the switch 19 is thrown in one direction, the switch 49 is thrown in the opposite direction and vice versa.

When the two switches 19 and 49 are in the positions shown, it will be seen that battery set 14 is connected to and supplies current to the motor 10, so as to drive the same.

batteries in the vehicle is maintained At the same time, battery set 13'is disconnected from the motor but is connected through switch 49 to the generator 45 which supplies current thereto so as to charge the same. The plungers and coils of the relay switches 33 and 34 are so designed that the plungers will be raised only at a predcten I) mined voltage of the corresponding set of batteries or on the passage of current of predetermined value through the coil circuits. Therefore when the battery 13 I fully charged by the generator, or is char .1 to a predetermined point, the relay switcn 33 will be operated, closing the circuit through the coil 31 of switch 19. The coil will therefore be energized and the switch 19 will bethrown to the opposite position seor to the left, inasmuch as the circuit of coil 32 of switch 19 was previously broken at the switch 34 when the current charge in battery set 14 dropped to a predetermined value. The positions of the switches 19 and 49 will therefore be reversed with respect to the positions shown on the drawing so that the battery set 13 which is in charged condition is connected to the motor and battery set 14 which may be wholly or partially discharged is at the same time dis-- connected from the motor and is connected by switch 49 to the generator 45. Thus, the operation is continuous and the motor is disconnected from the practically discharged battery to the charged battery without any interruption and without even being brought to a stop. When the battery 14 is charged to a predetermined alue, the connections will again be reversed in a manner above stated.

This system above described is designed primarily for use in motor vehicles provided with battery driven or battery supplied motors. The motor and generator need not be of large size in view of the work which they are to accomplish and may, if desired, be mounted in the hood of the vehicle. With this arrangement, one set 02 practically charged condition, or at least iicondition for immediate use, when the ct? set is discharging. .Consequcntly, hicle can be run for a long period out any interruption as far as the recharg- 11;! ing of the batteries is concerned.

It is apparent that my invention is capable of considerable modification, with in the scope of the appended claim and I do not desire to be confined to the exact arrang'ements shown. 7 j

Having thus described my invention, what I claim is v In an electric system, a translating device, two storage batteries, acharging genorator, switching mebha'nism for connecting -.one battery to the translating device and the other battery to the generator, and for reversing the. connections when a battery 'reachesa predetermined condition of charge, .said switching mechanism includmg an electromagnetic switch having connections with both batteries and having a taro-magnetic v relay switches each having a coil adapted to be energized by current from I one of the batteries.

In testimony whereof, I hereunto afiiX my signature in the presence of two witnesses. 1

JOHN T. Lis'rER.

Witnesses:

H. R. SULLIVAN A. F. Kwrs. 

